Select this link to download a .pdf version of A. Svoboda, Computing Mechanisms and Linkages, Dover Publications, 1965, (17MB). This book was originally published by McGraw-Hill in 1948.
Select this link to download a .pdf version of A. B. Kempe, How to Draw a Straight Line, MacMillan and Co., London, 1877. (1.8MB)
Cameron Turner designed a four-bar and a six-bar linkage to assist the dumping movement of a wheelbarrow. This video provides a comparison of their operation.
Colin Sledge designed this linkage to guide an airfoil section around the main spar. By adjusting the amount of twist the entire wing acts as an aileron to control the aircraft.
Brendan Smith designed this six-bar linkage to guide a big-screen TV from a horizontal position hidden in the ceiling into a vertical position for convenient viewing.
Adam Shutt designed this six-bar linkage to guide the movement of the rear spoiler for a high performance car.
Yang Liu designed a four-bar and a six-bar linkage to guide a stacked bookcase into and out of reach. This video shows the two designs.